Ignition-timer for gas-engines.



J. T. PEDERSEN.

IGNITION TIMER FOR GAS ENGINES.

APPLICATION TILED $21M, 1914.

1127805 Patented Feb. 9, 1915.

- 1 WITNESSES: l/VVE/VTOR I I I g I W 1 Br JOHANNES THEODORE PEDERSEN, OF FLUSHING, NEW YORK.

IGNITION-TIMER FOR GAS-ENGINES.

vented an Improvement in Ignition-Timers r for Gas Engines, of which the following is a Specification. 5?:" i

. V This invention relates to timers for ignitionkapparatusfor gas engines as emrnotor boats, and

' otherwise, and especially to the arrangement of the binding terminalsjgfor the circuit wires leading tolthe s'park plugs of the ya-.

rious cylinders of the'engine. I v

My invention relates more particularly to rotary timers, in which, as is customary, there is a rotary contact carriage turned by a shaft driven. from the crank shaft of the engine, which rotary contact against stationary contacts to pe'rlodically close the hinders. In this class' 'of iinwhich the stationary spaced, and against which stationary conelectric' circuit to the spark plugs in thecyltimers there are also mploycd acollar, a yoke, and a roller Contact in conjunction with a timer casing contacts are equally tacts the roller contact bears, in turn, to

completc thecircuit to the spark plugs. In

these timer'casings the binding terminals have heretofore been placed exterior] y thereof in radial alinement with the stationary contacts. and when placed in position in various motor cars and motor boats. due to the compact arrangement of the parts. it is exceedingly dillicult to make the necessary connections with at least some of these binding terminals. and the. object of my present invention is to provide a casing of a rotary timer with conductor bass so as to gather or bring together the binding terminals in order that they may be all readily accessible, as will he hereinafter more particularlv dcscrila-d. it lacing understood that the invention is applicable lo all type-4 oi time s.

In the drawing. Figure l is a front ele vation and partial cross section illustratin parts of the rotary present invention relates. Fig. '12 is a side elevation of the same with the lead wires omitted. for clcarncss in illustration. Fig. 2, is an e evation of one of the. conductor bars, and Fig. 4 is a similar view illustrating a modilied form of chfilluctor bars.

Referring to the,drawing and particu- Specification of Letters Iatent.

present invention,

terminal to which my- Patented Feb. 9, 1915.

Application filed February 4, 1914. Serial No. 816,438.

larly to Figs. 1, 2 and 3, in carrying out my the ignition timer prefer'ably comprises a casing 10, of any suitable material, and fitted intcriorly with a ring 11 of insulating material, in which, in equally spaced positions, there are contact terminals 12, 13, 14 and 15, the surfaces of which are flush with the inner surface of the ring 1'1.-

. In the drawing I have illustrated an ignition timer adapted for use in a four-cyliir der engine, and consequently four contact terminals are shown. It will be undelstood, however, that my inventionis applicable to a'timer adapted to be fitted to an engine having any desired number of cylinders.

Connected to and extending from each of the contact terminals 12 to 15. inclusive, there are binding posts 16 to 19, inclusive, respectively, each of which pass through a suitable opening provided therefor in the casing 10. The casing 10 is also preferably provided with a lug 20, at the end of which there is 'an eye 21 for connecting the casing towthe spark controlling rod on the engine, and, as is also shown in Figs. 1 and 2, the outer face of the easing 10 may he provided centrally with a ccntxrring bearing -2-2.

As is customary in rotary timers of the class to which my invention is. applicable, there is employed. in conjunction with the casing. a collar 23 adapted to be connected to a shaft driven from the crank shaft of the engine. a voke member '24 suitably connected to the collar and carrying a contact 'whccl 25. adapted to bear against the inner surface of the ring 11 and successively against the surfaces of the contacts 12- to 15 inclusive. the collar. yoke and contact wheel being shown in dotted lines in Fig. l ol' the drawing.

. The parts of the timer. to which referen e has hcreiul elore been made. are uch as are cuslmnaril) empl yed in this class of Linn-rs, in lhc use of which the inding post Hi to I inclusive. are pro ided with suita le thum screws. in order t elcrtrirallv connect thereto the terminals or lead wires to the various spark plugs. hereinhcfore stated. hmvevcr, in man cases the under pair or at least one pair of such binding terminals are practically imu-cessihlcaunless the mechanism is dismalulcd, and in order to obviate this dillicullv. l propose to arrangethe hindine terminals in groups. that is to gather the same together. In order t accomplish this purpose, I employ, in the timer illustrated, a pair of conductor bars,

indicated respectively at 26 and 27.

Adjacent one end, the conductor bar 26 is provided, 0 its outer surface, with a strip of insulating material 28 which may be secured thereto by means of rivets 29 or otherwise. At this end, the conductor bar 26 is provided with an ear or lug preferably extending at right angles thereto and pro vided, adjacent'its extremity,-with a screw 30 and thumb nut 32. At its opposite end the conductor bar 26 is adapted to be associated with the adjacent pair of binding posts 16 and 17, and in placing the conductor bar in position, the washer or insulating material 34 is first placed over the binding post 17, which is then fitted into the recess 33 and the conductor'bars secured in position by turning down the nut 35 on the outer end of the binding post 17. At the other end of the conductor bar, the same, as Well as the insulation 28, is provided with an aperture 36, through which the binding post 16 passes, the aperture 36 being materially larger than the post 16 ,so that the latter cannot contact with the bar. ,Between the under surface of this end of the conductor bar and the outer surface of the casing there is employed an insulating washer 37 and exteriorly of the insulation 28 the binding post 16 is provided with a clamp nut '38 and at its outer end with a thumb nut 39;

It will now be apparent that the terminal 30 of the lead wire 41 may be connected between the thumb nut 32 and the lug 30 at the end of the conductor bar, and'also that the terminal 42 of the lead wire 43 may be electricallyconnected to the binding post 16 by being clamped between the nut 38 and the thumb nut 39, these lead wires'41 and 43 making the necessary connections with one terminal of the plugs in the corresponding cylinders of the engine, the charge in one of which is ignited when the roller contacts with the stationary contact 12, and the other when the roller bears against the stationary contact 13. The conductor bar 27 is similarly connected to the binding posts 18 and 19. The binding post. 18 is fitted exteriorly of the casing with an insulating washer 44, and is received within the recess at one end of the conductor bar 27, which is ,scuged thereto by the clamp nut 45. At the opposite end, and on its outer surface, the conductor bar 27 is provided with a strip of insulation 46, which is connected thereto by rivets 47, or otherwise, and between the under surface of this end of the conductor bar and the outer surface of the casing there is an insulating washer 48, through which, as well as through the conductor bar 27, and the strip of insulation 46, the binding post19 passes. Exteriorly of these parts, the binding post is provided with a clamp nut 49 and thumb nut 50, between which, as will be understood, a terminal 51 of the lead wire 52 may be electricaly connected.

At its upper extremity, as illustrated, the

conductor bar 27 is provided with a screw 53, a clamp nut 54, and a thumb nut 55,

between which latter a terminal 56 of the lead wire 57 may be electrically connected. These lead wires 52 and 57, as will be understood, extend to one terminal of the spark plugs of other cylinders of the engine, the

,charge in one of which is fired-when the roller contact bears against the stationary contact '15 and in the other when the roller contact bears against the stationary contact 14. i

As shown in 'Fig. 4, the extremity of the lug or car 30 may be turned at right angles to the main portion thereof, as indicated at 58, and may be provided with a binding screw 59 and a thumb screw 60, in order that connection may be made, if desired, at right in the positions indicated merely for the purpose of clearness of illustration, whereas 1n practice they will be caused to lie close .to the outer surface of the casing.

I claim as myinvention:

1. In an ignition timer for gas engines and in combination with a casing, stationary contact terminals in equally spaced positions therein, and a terminal post extending from each ofthe said stationary contacts through the said casing, of a conductor insulated from the casing and extending between two of the said terminal posts, to one of which it is electrically connected and from the other of which it is insulated, and means for making electrical connections to the said conductor, at the end at which it is insulated from the said other terminal post.

2. In an ignition timer for gas'engines, in combination with the casing and stationary contact terminals in equally spaced positions therein, and a terminal post extending from each of the said stationary contacts through the said casing, of a conductor bar extending between adjacent terminal posts insulated from the said casing and electrically connected to one of the said terminal posts, and insulated from another of the said terminal posts, a device associated with the said other terminal posts for connecting a lead wire thereto, and a binding post on the end of the .said conductor bar adjacent the said other terminal posts.

3. In an ignition timer forgas engines and in combination with the casing, stationary contact terminals in equally spaced positions therein, and a terminal post extending from each of the said stationary contacts through the said casing, of a conductor bar extending between adjacent terminal posts and electrically connected to one of the same, means for insulating the said conductor bar from the said casing, means for insulating the said conductor bar from the other terminal post, and a binding post connected to the said conductor bar at the end thereof adjacent the said other terminal post.

Signed by me this 29th day of January, 1914.

JOHANNES TH. PEDERSEN.

Witnesses:

BERTHA M. ALLEN, J. B. LE BLANC. 

